IntlCalendar::fieldDifference
(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1)
IntlCalendar::fieldDifference — Calculate difference between given time and this object?s time
Description
Object oriented style
public int IntlCalendar::fieldDifference ( float $when , int $field )Procedural style
int intlcal_field_difference ( IntlCalendar $cal , float $when , int $field ) Return the difference between the given time and the time this object is set to, with respect to the quantity specified the field parameter.
This method is meant to be called successively, first with the most significant field of interest down to the least significant field. To this end, as a side effect, this calendar?s value for the field specified is advanced by the amount returned.
Parameters
cal
The IntlCalendar resource.
when
The time against which to compare the quantity represented by the field. For the result to be positive, the time given for this parameter must be ahead of the time of the object the method is being invoked on.
field
The field that represents the quantity being compared.
One of the IntlCalendar date/time field constants. These are integer values between 0 and IntlCalendar::FIELD_COUNT.
Return Values
Returns a (signed) difference of time in the unit associated with the specified field or FALSE on failure.
Examples
Example #1 IntlCalendar::fieldDifference()
<?php
ini_set('date.timezone',?'Europe/Lisbon');
ini_set('intl.default_locale',?'fr_FR');
$cal1?=?IntlCalendar::fromDateTime('2012-02-29?09:00:11');
$cal2?=?IntlCalendar::fromDateTime('2013-03-01?09:19:29');
$time?=?$cal2->getTime();
echo?"Time?before:?",?IntlDateFormatter::formatObject($cal1),?"\n";
printf(
????"The?difference?in?time?is?%d?year(s),?%d?month(s),?"
??.?"%d?day(s),?%d?hour(s)?and?%d?minute(s)\n",
????$cal1->fieldDifference($time,?IntlCalendar::FIELD_YEAR),
????$cal1->fieldDifference($time,?IntlCalendar::FIELD_MONTH),
????$cal1->fieldDifference($time,?IntlCalendar::FIELD_DAY_OF_MONTH),
????$cal1->fieldDifference($time,?IntlCalendar::FIELD_HOUR_OF_DAY),
????$cal1->fieldDifference($time,?IntlCalendar::FIELD_MINUTE)
);
//now?it?was?advanced?to?the?target?time,?exception?for?the?seconds,
//for?which?we?did?not?measure?the?difference
echo?"Time?after:?",?IntlDateFormatter::formatObject($cal1),?"\n";The above example will output:
Time before: 29 févr. 2012 09:00:11
The difference in time is 1 year(s), 0 month(s), 1 day(s), 0 hour(s) and 19 minute(s)
Time after: 1 mars 2013 09:19:11← IntlCalendar::equals
IntlCalendar::fromDateTime →
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